Sustainable Strategy and Commitments

* DEC hours FEC frequency Quality of Service Hours and Frequency of interruptions Enel Rio 21.08 enel Regulatory limits Contract limits (only Rio and Goiás) Enel Ceará* Enel Goiás 37.48 31.78 - 29.24 26.91 22.06 18.21 16.81 12.09 11.51 10.90 14.94 14.01 13.69 11.2 10.8 10.5 8.81 8.78 9.39 2016 2017 mar.-18 2016 2017 mar.-18 2016 2017 mar.-18 11.6 24.55 18.42 17.98 16.48 12.02 9.87 8.61 8.83 8.45 7.79 12.84 11.51 11.03 9.19 8.51 7.92 5.04 5.37 5.83 2016 2017 mar.-18 2016 2017 mar.-18 2016 2017 mar.-18 Data includes March's 2018 Blackout at northeast region. Values without it – DEC: (9,38 - 1,21= 8,17 Hours) / FEC: ( 5,83 – 0,55 = 5,28 times). - 6

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